[Stomach-duodenal ulcer and gastric juice--significiance and value of the gastric juice examination].
D000328:Adult; D000368:Aged; D000818:Animals; D005260:Female; D005745:Gastric Acidity Determination; D006801:Humans; D008297:Male; D008875:Middle Aged; D010437:Peptic Ulcer / Q000175:diagnosis* / Q000503:physiopathology